peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 186

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

Semiconductor Group
Table 2-31 Summary of Registers 1 (cont’d)
Bit
No.
6
7
Table 2-32 Summary of Registers 2
Bit
No.
0
1
2
3
0 (DLAB = 0) 0 (DLAB = 0) 1 (DLAB = 0) 2
Receiver
Buffer
Register
(read only)
RBR
Data bit 6
Data bit 7
4
Modem
Control
Register
MCR
Data
terminal
ready (DTR)
Request to
send (RTS)
Out 1
Out 2
5
Line
Status
Register
LSR
Data ready
(DR)
Overrun
error (OE)
Parity error
(PE)
Framing
error (FE)
Transmitter
Holding
Register
(write only)
THR
Data bit 6
Data bit 7
6
Modem
Status
Register
MSR
Delta clear to
send (DCTS)
Delta data
set ready
(DDSR)
Trailing edge
ring indicator
(TERI)
Delta data
carrier detect
(DDCD)
Interrupt
Enable
Register
IER
0
0
Register Address
Register Address
2-140
7
Scratch
Register
SCR
Bit 0
Bit 1
Bit 2
Bit 3
Interrupt
Ident.
Register
(read
only)
IIR
FIFOs
enabled
(FE)
FIFOs
enabled
(FE)
2)
2)
Functional Block Description
0
(DLAB = 1)
Divisor
Latch (LS)
DLL
Bit 0
Bit 1
Bit 2
Bit 3
2
FIFO
Control
Register
(write
only)
FCR
RCVR
FIFO
trigger level
(LSB)
RCVR
FIFO
trigger level
(MSB)
PEB 20560
1
(DLAB = 1)
Divisor
Latch (MS)
DLM
Bit 8
Bit 9
Bit 10
Bit 11
3
Line
Control
Register
LCR
Set break
(SBR)
Divisor
latch
access bit
(DLAB)
2003-08